import Vue from "./Vue";
let vm = new Vue({
  el: "#app",
  watch: {
    "obj.a.b"() {
      console.log("watcher被盗用了");
    },
  },
  data() {
    return {
      a: 10,
      obj: { a: { b: 30 } },
      arr: [1, 2, 3, 4, 5],
    };
  },
});
vm._data.obj.a.b = 200;
console.log(vm);
